desirous of ornamenting Milan with some specimens of his skill as a painter, employed him to paint in the refectory of the Dominican convent of Santa Maria delle Gratie, in that city, a picture, the subject of which was to be the Last Supper. Of this picture it is related, that Leonardo was so impressed with the dignity of the subject, and so anxious to answer the high ideas he had formed of it in his own mind, that his progress was very slow, and that he spent much time in meditation and thought, during which the work was apparently at a stand. The Prior of the convent, thinking it therefore neglected, complained to the Duke; but Leonardo assuring the Duke that not less than two hours were every day bestowed on it, he was satisfied. Nevertheless the Prior, after a short time, finding the work very little advanced, once more applied to the Duke, who in some degree of anger, as thinking Leonardo had deceived him, reprimanded him in strong terms for his delay. What Leonardo had scorned to urge to the Prior in his defence, he now thought fit to plead in his excuse to the Duke, to convince him that a painter did not labour solely with his hands, but that his mind might be deeply studying his subject, when his hands were unemployed, and he in appearance perfectly idle. In proof of this, he told the Duke
